COOLCATS!:
Tori, Matt, and Taylor
We all love sports,annd like to watch baseball!... That's pretty much all we have in common. Exciting!
4/6/11- Solubility Zinc Oxide:
nearly insoluble
used in glass, ceramics, plastics, rubber, and ointment
FDA says its safe
Hazardous to breathe fumes
non-toxic
Copper 2 Sulfate
Commonly in salt
Hericide, fungacide, pesticide
toxicirratates eyes and skin
Cant be ingested
http://en.wikipedia.org/wiki/Copper(II)_sulfate
For our lab we are going to place 10 millileters of water in each test tube. Then we will place 0.2 grams of each substance into the test tubes.( ZInc oxide and Copper 2 Sulfate)
After going through four trials with calculating the time it took the sustance to dissolve, if it does, test the other substance. Lab: 4/7/11
Question: Are Copper 2 Sulfate and Zinc Oxide soluble?
Hypothesis: That Zinc Oxide won't be soluble, but Copper 2 Sulfate will.
Independent Variable: The solude
Levels:
Trials
Trial 1
Trail 2
Copper Sulfate(0.2 g)
soluble
soluble
Zinc Oxide (0.2 g)
not soluble
not soluble
Dependent Variables: The amount of water, amount of solude, and at room temperature.
Lab: 4/11/11
Question: How much solute is needed to make the kool-aid saturated?
Hypothesis: The higher the amount of solute, the closer it would be to being saturated.
Dependent Variable: Amount of kool-aid
Independent Variable: Concentration (saturation)
Constants: Amount of water(20mL), person stirring the mixture, and kind of solute
Levels: 5 grams, 10 grams, 15 grams
Solute
Solvent
Concentration
Saturated or not
5 grams
20 mL
0.25
No
10 grams
20 mL
0.5
No
15 grams
20 mL
0.75
Yes
Taylor measuring the amount of solute we needed using the triple-beam balance. Lab: 4/19/11Question: Does the temperature of the solvent affect the solubility of the mystery solute? Hypothesis: Yes, at a higher temperature the solubility will increase. IV: Temperature (degrees Celcius) DV: Solubility (g/100mL) Constants: Volume of water(10mL), weighing paper, solute Procedure: 1.Measure 10 grams, 8 grams, 6 grams, and 4 grams of solute. 2. Put solute in test tube with 10 mL of water. 3. Mix using a lab scoop while holding the test tube in hot water bath. 4. After it has dissolved, place test tube in the test tube rack and allow to cool. 5. Record the temperature when the first crystals appear. Data Table:
Mass of Solute
Solubility(g/100mL)
Temperature(Celcius)
10g
100
56.3
8g
80
44.9
6g
60
32.2
4g
40
23.1
Our guess for the mystery solute would be potassium nitrate.
April 26th, 2011: Compound Research
Calcium chloride:
CaCl2
A salt of calcium and chlorine
Solid at room temperature
Must be kept in tightly-sealed air-tight containers
Do not eat-causes burns in mouth and esophagus
NOT SAFE!
Sodium bicarbonate (also known as baking soda!):
NaHCO3
White solid-fine powder
Fed to cattle
Treats acid indigestion and heartburn
Can be consumed
SAFE!
Bromothymol Blue:
Weak acid
Indicated pH levels
Toxic to lungs
NOT SAFE! Lab: 4/26/11 to 4/29/11:
This powerpoint demonstrates what we did and all of the information and data we collected from experimenting with the compounds we researched. We looked for chemical reactions when the compounds were mixed and also if there were endothermic or exothermic reactions.
Lab 5/9/11 to 5/10/11:
Question: How will the mass of the products compare to the mass of the reactants in a solid percipitate chemical reaction?
Hypothesis: The mass of the reactants will be the same as the mass of the product after the reaction.
Independent variable: The mass of the reactants (grams)
Dependent variable: The mass of the products (grams)
Mass of the glass: 87.5 grams
Procedure:
1. Measure the mass of the glass
2. Measure a ceratain amount of reactant in each test tube
3. Pick up the two test tubes and flip them upsidown in the beaker so the two chemicals are able to react
4. Observe the reaction and observe the ending mass
5. Determine if the mass has changed at all
Conclusion: After our experiment, we looked back on the results and found that the mass really never changed after the reaction. The reactants and the products had the same mass. This proved that our hypothesis was right and it supports the law of conservation of mass.
Lab May 12 2011
Question: How will the mass of the reactants compare to the mass of the products when a gas forms in the reaction
Hypothesis: The mass will remain the same in the reactants and in the products because of the law of conservation of mass.
Independent Variable: Mass of the Reactant
Dependent Variables: Mass of the Products
Procedure: 1. Get a quarter of the alka-selzer and 10 mL of the water and measure the mass and the mass of the veil.
2. Combine the two reactants and watch the reactions and then measure the mass of the products.
3. Repeat the expirement 2 more times.
Tori, Matt, and Taylor
We all love sports,annd like to watch baseball!... That's pretty much all we have in common. Exciting!
4/6/11- Solubility
Zinc Oxide:
- nearly insoluble
- used in glass, ceramics, plastics, rubber, and ointment
- FDA says its safe
- Hazardous to breathe fumes
- non-toxic
Copper 2 Sulfate- Commonly in salt
- Hericide, fungacide, pesticide
- toxic irratates eyes and skin
- Cant be ingested
http://en.wikipedia.org/wiki/Copper(II)_sulfateFor our lab we are going to place 10 millileters of water in each test tube. Then we will place 0.2 grams of each substance into the test tubes.( ZInc oxide and Copper 2 Sulfate)
After going through four trials with calculating the time it took the sustance to dissolve, if it does, test the other substance.
Lab: 4/7/11
Question: Are Copper 2 Sulfate and Zinc Oxide soluble?
Hypothesis: That Zinc Oxide won't be soluble, but Copper 2 Sulfate will.
Independent Variable: The solude
Levels:
Lab: 4/11/11
Question: How much solute is needed to make the kool-aid saturated?
Hypothesis: The higher the amount of solute, the closer it would be to being saturated.
Dependent Variable: Amount of kool-aid
Independent Variable: Concentration (saturation)
Constants: Amount of water(20mL), person stirring the mixture, and kind of solute
Levels: 5 grams, 10 grams, 15 grams
Taylor measuring the amount of solute we needed using the triple-beam balance. Lab: 4/19/11Question: Does the temperature of the solvent affect the solubility of the mystery solute? Hypothesis: Yes, at a higher temperature the solubility will increase. IV: Temperature (degrees Celcius) DV: Solubility (g/100mL) Constants: Volume of water(10mL), weighing paper, solute Procedure: 1.Measure 10 grams, 8 grams, 6 grams, and 4 grams of solute. 2. Put solute in test tube with 10 mL of water. 3. Mix using a lab scoop while holding the test tube in hot water bath. 4. After it has dissolved, place test tube in the test tube rack and allow to cool. 5. Record the temperature when the first crystals appear. Data Table:
April 26th, 2011: Compound Research
Calcium chloride:
CaCl2
- A salt of calcium and chlorine
- Solid at room temperature
- Must be kept in tightly-sealed air-tight containers
- Do not eat-causes burns in mouth and esophagus
NOT SAFE!Sodium bicarbonate (also known as baking soda!):
NaHCO3
- White solid-fine powder
- Fed to cattle
- Treats acid indigestion and heartburn
- Can be consumed
SAFE!Bromothymol Blue:
- Weak acid
- Indicated pH levels
- Toxic to lungs
NOT SAFE!Lab: 4/26/11 to 4/29/11:
This powerpoint demonstrates what we did and all of the information and data we collected from experimenting with the compounds we researched. We looked for chemical reactions when the compounds were mixed and also if there were endothermic or exothermic reactions.
Watch our video!
Lab 5/9/11 to 5/10/11:
Question: How will the mass of the products compare to the mass of the reactants in a solid percipitate chemical reaction?
Hypothesis: The mass of the reactants will be the same as the mass of the product after the reaction.
Independent variable: The mass of the reactants (grams)
Dependent variable: The mass of the products (grams)
Mass of the glass: 87.5 grams
Procedure:
1. Measure the mass of the glass
2. Measure a ceratain amount of reactant in each test tube
3. Pick up the two test tubes and flip them upsidown in the beaker so the two chemicals are able to react
4. Observe the reaction and observe the ending mass
5. Determine if the mass has changed at all
Conclusion: After our experiment, we looked back on the results and found that the mass really never changed after the reaction. The reactants and the products had the same mass. This proved that our hypothesis was right and it supports the law of conservation of mass.
Lab May 12 2011
Question: How will the mass of the reactants compare to the mass of the products when a gas forms in the reaction
Hypothesis: The mass will remain the same in the reactants and in the products because of the law of conservation of mass.
Independent Variable: Mass of the Reactant
Dependent Variables: Mass of the Products
Procedure: 1. Get a quarter of the alka-selzer and 10 mL of the water and measure the mass and the mass of the veil.
2. Combine the two reactants and watch the reactions and then measure the mass of the products.
3. Repeat the expirement 2 more times.